Acoustic panel



July 16, 1929. I M. MAzER AICOUSTIC PANEL Filed Jan. 19.

ATTORNEY} Patented Jul '16, 1929. I

vumwin STATES- PA T QFFICE.

ACOUSTIC PANEI'L,

Application filed January 19, 1928. Serial No. 247,956.

The present invention relates to sound absorbing material for usefparticularly to wall and ceiling constructionfor controlling the acoustics of a room or other enclosure, and has for an object to provide an improved means for supporting the material against sagging or displacement incident to the weight of the material. Felt is recognized by acoustic engineers a! being a sound absorbing material of a high degree, and it is also well known that other materials, among which may be mentioned fibrous and porous substances, mineral wool and the like, possess to various degrees, the

1 sound absorbing qualities which are found in y taken transversely through a frame or the felt.

Felt, however, isf a material which is more readily handled and has proven by experience to be very effective in the correction .of acoustic defects. Various attempts have. been made in practice, and also in the patented art, to support.

the sound absorbing material in position and maintain it from sagging or shifting incldent to its vertical or horizontal pos1t1on. when eitherv in the ceiling or in the wall, but ,whilesuch prior attempts have materially aided in the support of the acoustic material, the means have not been entirely satisfactory and the mounting of the acoustic material has not been of the permanent nature which is so desirable. f

When the sound absorbing materialsags or becomes displaced it destroys the uniform absorption of the sound waves and the smooth flat surface of the ceiling -or wall, and thus destroys the aesthetic appearance of the room or enclosure with which the architects are greatly concerned.

It is another object of this invention to pro vide a support for the fibrous sound absorbing material, whichis of a permanent nature, which may be incorporated into the structure of the material, so as to become intimately associated with the fibers thereof and thus uniformly and permanently support the material in either the ceiling or the wall, and to provide a supporting means which may be placed.

either within, above or below the sound absorbing material. 4 2

Another object of the invention is to providela support of this nature which will not only hold the material from sagging or. displacement, but which-will also maintain the 5 'material taut and provide a-support which may be easily and accurately secured in position to hold the felt or, other material used.

With the foregoing and other objects in View, the invention will' be more fully described hereinafter, and will be more particularly pointed out in the claim appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views. t

Figure 1 is 'a fragmentary plan view of a portion of sound absorbing material having the support embedded therein, part of the material' being broken away to show the support.v

Figure 2 is a fragmentary section'view like, showing a portion of the sound absorbing material with its suppo t secured to the frame.

Figure 3 is a fragmentary'sectional View through a portion of the sound absorbing material, showing a slight modification in the.-

structure of the same with its support, and

Figure 4 is a similar view. showing another which may be felt, or any other suitable substance of a fibrous or sound'absorbing nature and which is adapted to be placed over the ceiling or wall, or'certain. parts thereof, for the purpose of absorbing sound and eliminatmodification of the'mounting of the material on the su port.

ingor reducing reverberatory sound waves which destroy the acoustic properties of an enclosure. The body of the fibrous material 10 may befelt and in the; formation of the body '10 there may be incorporated a supporting fabric 11 of relatively large open mesh wire or the like, as shown and about and through which are felted the fibers of the body 10, so that the support 11 becomes substantiallyv an integral part of the sound absorbing material.

The wire 11 may be coextensive with the length and width of the material, but may be for sup cut with'the material tofthe required size for fill ng in panels or the like as may be required the edge portion of the material 10 is adapt ed to rest. A staple 14,1is driven through the material and the-support 1'1 and into the shoulder 13 so as to hold the material 10 taut. Any other suitable mounting for the material 15 may be placed against the under 10 side of the wire mesh support 16 and held thereto by tuft wires 17 ,which are placed at suitable intervals throughout the material 15 and which are twisted, tied or otherwise suitably secured to the wire mesh support 16. In this manner, the body of material 15 ma be held' in the'ceiling, or in the wall wit its outer free surface exposed for absorbing the vibrations set up by sound.

In Figure 4, the other modification shows the'wire mesh support 18 at the lower or'outer face of the sound absorbing material 19. The material 19 rests by gravity against the supglort 18 and is thus held against sag ing. e wire mesh sup ort may be made of any suitable wire of t e desired weight and with a mesh of the desired size for holding the sound absorbing material flat and from shifting or sagging. The support 18 may be coextensive with the material and may be readily cut or severed with the material; so-

construction and design of the above specifi call described embodiment of this invention wit out departing from the spirit thereof, such changes and modifications being restrict- What isclaimed is z- A sound absorbing panel for use in w ll,

floor and ceiling construction, comprising a.

frame member adapted to be supported upon .ed only by the scope of the following claim said wall, floor and ceiling, a bod of fibrous sound absorbing material, and a s leet of wire meshing embedded in the fibrous material and secured in said frame member to support the fibrous material in position in the frame member against stretchlng and sa ging.

In testimony whereof I a my signature.

'MaRoUs MAZER. 

